Hoisting-machine



N0 MOdeL) J. MAYHEW &' E. D. PAYNE.

HOISTING MACHINE.

Patented May 8, 1883.

N. PEIERs. Phum-Limo n mr, Washin ton. D. C.

UNITED STATES PATENT OFFICEQ I JOSEPH MAYHEW AND EDGAR D. PAYNE, OFCINCINNATI, OHIO.

HOISTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 277,147, dated May 8,1883. v Application filed February 5, 1883. (No model.)

To all whom it may concern:

Be it known that we, JOSEPH MAYHEW and EDGAR D. PAYNE, citizens of theUnited States, residing at Cincinnati, county of Hamilton, State ofOhio, have invented certain new and useful Improvements inHoisting-Machines, of which the following is a specification.

This invention relates to that class of hoisting-machines which are usedin the construcparts whereverthey occurinthediflerentviews,

and then particularly pointed out in the claims.

Figure 1 is a vertical section taken through line 00 w of Fig. 2,showing in the rear of the drums and their operating mechanism twoplatform-elevators with bod-rests working between vertical guides, andsuspended from ropes, which pass from the drums over pulleys hung inframes resting upon the joists of the story above. Fig. 2 is a top planview of the driving mechanism.

Referring to the parts, A is a woodenframe, which forms the base of themachine. Upon the cross-tie A is secured a standard or hollow pillar, B,which has projecting centrally from it a shal't,b,upon which themaster-wheel (l is journaled. Two standards, D D, secured upon the sidetimbers of the base A, furnish journal-bearings for the outer ends ofthe shafts e 6, upon which the rope-drums E E are secured. The innerends of the drum-shafts are journaled in a support, F, which arches overthe master-wheel, and has its ends resting upon and secured to thebase-frame. Upon the shaft eis secured a pinion, G, which meshes intothe teeth of wheelU. Asimilar pinion, G,

is fitted to turn freely upon shaft e, and also meshes into wheel 0, andis driven by it.

H is a clutch splined upon shaft 6, and adapted to be thrown into or outof engagement with the pinion G by a lever, h, fulcrumed on the standardD. The objectof the clutch is to regulatethe machine for elevating tothe different stories of the building, as will be hereinafter described.

The drum-shafts are driven in opposite directions by the wheel 0 throughthe pinions G G. Motion is imparted to wheel 0 through a beveled pinion,J, which is secured upon the end of a shaft,j. The shaft j is driven bya cog, K, which is secured upon the crank-shaft k, and meshes into apinion, L, secured upon shaft j. The shaftsj and k arejournaled in astandard, M, which is secured upon the base A. The platforms N, havingbod-rests a secured upon them, are arranged to slide between uprightguides at, and are suspended from wire ropes O O,'which are wound inopposite directions around the drums E E, and pass over sheaves 0, whichare suspended from cross-bars in the frames P, which rest upon therafters of one of the upper floors of the building.

The machine as represented in Fig. 1 is arranged to elevate to thesecond story of a building, the platforms being so adjusted that one isascending while the other is descending. VVhen,in the course ofconstructionbf the buildin g, it is desirable to elevate the materialsto the third story, the clutch H is thrown out of engagement with thepinion G. The frames P are then placed upon the next tier of raftersabove and the ropes O properly adjusted, which is done by winding therope upont-he tight pulley until the platform sustained by it is broughtto its upper position. Theplatform, which is suspended from the ropeupon the now loose drum, being at the same time in its lower position,the clutch is then thrown into engagement with the pinion G, and themachine is ready for use. The platforms are locked in any position byapawl, q, thrown into engagement with a notched disk, q, keyed upon theshaft j.

It willbe seen that our machine can be cheaply con'structed,occupies buta small space, and can be rapidly put up for use, changed for thedifferent elevations required, and taken apart for removal. I

What we claim as new, and desire to secure by Letters Patent, is-

1. In a hoisting=machine of the character described, the combination,substantially as specified, of frameA and master-wheel O withrope-drumsE E, mounted upon shafts .e e, andpinions G G, meshing intowheel 0.

2. The combination of the rope-drums E E, having pinions G G upon theends of their shafts at opposite ends, with the master-wheel (3,arranged to engage the pinions G G and rotate the shafts in oppositedirections, and suitable mechanism, such as shown, to drive themaster-wheel, substantially as described.

3. In a hoisting-machine of the character described, the combination,substantially as specified, of wheel 0, drums E E, pinions G G, andclutch H, the pinion G being keyed to its shaft, while the pinion G isloose upon its shaft when the pinion G is disengaged from JOSEPH MAYHEW.EDGAR 1). PAYNE.

Witnesses: v

JACOB J. GESSERT, GEO. J. MURRAY.

